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We study non-linear traces of Choquet type and Sugeno type on matrix algebras. They have certain partial additivities. We show that these partial additivities characterize non-linear traces of both Choquet type and Sugeno type respectively.…

Functional Analysis · Mathematics 2021-09-07 Masaru Nagisa , Yasuo Watatani

We introduce non-linear traces of the Choquet type and Sugeno type on a semifinite factor $\mathcal{M}$ as a non-commutative analog of the Choquet integral and Sugeno integral for non-additive measures. We need weighted dimension function…

Operator Algebras · Mathematics 2024-04-30 Masaru Nagisa , Yasuo Watatani

We introduced non-linear traces of the Choquet type and the Sugeno type on semi-finite factors M in [36] as a non-commutative analog of the Choquet integral and Sugeno integral for non-additive measures. We need a weighted dimension…

Operator Algebras · Mathematics 2025-10-28 Masaru Nagisa , Yasuo Watatani

We study non-linear traces of Choquet type on AF algebras. Building on the characterization of Choquet traces on matrix algebras due to Nagisa--Watatani, we generalize the construction to arbitrary unital AF algebras. We show that there is…

Operator Algebras · Mathematics 2026-02-03 Ryota Ninomiya

We introduce the notion of trace convexity for functions and respectively, for subsets of a compact topological space. This notion generalizes both classical convexity of vector spaces, as well as Choquet convexity for compact metric…

Functional Analysis · Mathematics 2020-04-07 Mohammed Bachir , Aris Daniilidis

We generalize von Neumann's well-known trace inequality, as well as related eigenvalue inequalities for hermitian matrices, to Schatten-class operators between complex Hilbert spaces of infinite dimension. To this end, we exploit some…

Functional Analysis · Mathematics 2023-03-30 Gunther Dirr , Frederik vom Ende

We introduce a~\textit{Choquet-Sugeno-like operator} generalizing many operators for bounded functions and monotone measures from the literature, e.g., Sugeno-like operator, Lov\'{a}sz and Owen measure extensions, $\rF$-decomposition…

Functional Analysis · Mathematics 2021-02-02 Michal Boczek , Ondrej Hutník , Marek Kaluszka

We consider the operator algebra $\mathscr A$ on $\mathscr S(\mathbb R^n)$ generated by the Shubin type pseudodifferential operators, the Heisenberg-Weyl operators and the lifts of the unitary operators on $\mathbb C^n$ to metaplectic…

Functional Analysis · Mathematics 2022-04-13 Anton Savin , Elmar Schrohe

In this note the Choquet type operators are introduced, in connection to Choquet's theory of integrability with respect to a not necessarily additive set function. Based on their properties, a quantitative estimate for the nonlinear…

Classical Analysis and ODEs · Mathematics 2021-04-14 Sorin G. Gal , Constantin P. Niculescu

We consider an algebra $\mathscr A$ of Fourier integral operators on $\mathbb R^n$. It consists of all operators $D: \mathscr S(\mathbb R^n)\to \mathscr S(\mathbb R^n)$ on the Schwartz space $\mathscr S(\mathbb R^n)$ that can be written as…

Operator Algebras · Mathematics 2024-05-29 Anton Savin , Elmar Schrohe

In this paper, the definition of noncommutative Orlicz sequence spaces is given, these spaces generalize the Schatten classes Sp(H). After some relations of trace and norm on this spaces have been researched, one give the criterion of…

Functional Analysis · Mathematics 2019-04-30 Ma Zhenhua , Ji Kui , Li Yucheng

In this paper we present symbolic criteria for invariant operators on compact topological groups $G$ characterising the Schatten-von Neumann classes $S_{r}(L^{2}(G))$ for all $0<r\leq\infty$. Since it is known that for pseudo-differential…

Functional Analysis · Mathematics 2016-02-10 Julio Delgado , Michael Ruzhansky

As a follow-up to a paper of D. Petz and J. Zem\'anek [4], a number of equivalent conditions which characterize the trace among linear functionals on matrix algebras, finite rank operators and the socle elements of semisimple Banach…

Functional Analysis · Mathematics 2018-08-21 Gareth Braatvedt , Rudi Brits , Francois Schulz

We carry out a careful study of operator algebras associated with Delone dynamical systems. A von Neumann algebra is defined using noncommutative integration theory. Features of these algebras and the operators they contain are discussed.…

Mathematical Physics · Physics 2007-05-23 D. Lenz , P. Stollmann

We combine the theory of traces in homotopical algebra with sheaf theory in derived algebraic geometry to deduce general fixed point and character formulas. The formalism of dimension (or Hochschild homology) of a dualizable object in the…

Algebraic Geometry · Mathematics 2019-06-06 David Ben-Zvi , David Nadler

We present some properties of orthogonality and relate them with support disjoint and norm inequalities in p Schatten ideals. In addition, we investigate the problem of characterization of norm parallelism for bounded linear operators. We…

Functional Analysis · Mathematics 2021-07-23 T. Bottazzi , C. Conde , M. S. Moslehian , P. Wojcik , A. Zamani

We generalize some results on compact operators on Hilbert spaces to "compact" operators on some Hilbert right W*-modules. We present in this frame the Schatten decomposition of the compact operators, the trace, the Banach Lp-spaces and…

Operator Algebras · Mathematics 2014-03-27 Corneliu Constantinescu

We characterize the topological non-cancellative cones that are expressible as projective limits of finite powers of $[0,\infty]$. These are also the cones of lower semicontinuous extended-valued traces on AF C*-algebras. Our main result…

Operator Algebras · Mathematics 2020-09-22 Mark Moodie , Leonel Robert

Let $G$ be a compact Lie group of dimension $n.$ In this work we characterise the membership of classical pseudo-differential operators on $G$ in the trace class ideal $S_{1}(L^2(G)),$ as well as in the setting of the Schatten ideals…

Functional Analysis · Mathematics 2023-01-11 Duván Cardona , Marianna Chatzakou , Michael Ruzhansky , Joachim Toft

We investigate for a bounded semigroup of linear operators $S$ on a Banach space $E$ and a vector $x \in E$, when relative compactness of $S(I-T)x$ for every $T \in S$ implies relative compactness of the orbit $Sx$. In particular, we derive…

Functional Analysis · Mathematics 2020-07-03 Bálint Farkas , Henrik Kreidler
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